The European Commission has published the study on consumers’ use of comparison tools. As part of the study LE Europe completed a behavioural experiment in 15 EU countries that investigated consumer understanding and use comparison tools. The study forms part of the evidence base used by the Commission to develop, together with stakeholders, a series of principles to be respected by these websites and apps. The action will contribute to the proper enforcement of relevant legislation, such as the Unfair Commercial Practices Directive and the Consumer Rights Directive, and improving transparency for consumers.